The design surrounds a transparent half-circle locket containing approximately 1-carat of Australian white opals. A token of hope and purity in ancient times, opal is the modern birthstone of people born in October.

Australian Legal Tender

Issued as legal tender under the Australian Currency Act 1965, the coin bears the Ian Rank-Broadley effigy of Her Majesty Queen Elizabeth II on its obverse.

Presentation Packaging

The coin is housed in a presentation case with a jarrah timber lid featuring a circular viewing window. The case comes in a beautifully illustrated box shipper.

Limited Mintage

The Perth Mint will release no more than 1,000 of these gold proof locket coins.

Numbered Certificate of Authenticity

Each coin is accompanied by a numbered Certificate of Authenticity.

Collect the Complete Series

Scheduled for release between 2007 and 2011, Treasures of Australia celebrates five glittering prizes found in Australia: Sapphires, Opals, Diamonds, Gold, and Pearls.

Technical Specifications

Gold Content (Troy oz)

1

Monetary Denomination (AUD)

100

Fineness (% purity)

99.99

Minimum Gross Weight (g)

31.107

Maximum Diameter (mm)

36.10

Maximum Thickness (mm)

3.00

The second gold release from our Treasures of Australia locket coin series encapsulates opals. Australia produces around 95 per cent of the world's opals, including gem quality opal from the South Australian town of Coober Pedy, and coveted black opal from Lightning Ridge in New South Wales.